When a group or person dances and you have to go back and and see what they did because you didn't understand it
I.aM.mE ABDC 6's Winners dance style, Every time they dance they are Brain Banging .
by TheBrainBang June 25, 2011
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Brain Bang is used to describe how you feel after witnessing something mind blowing or seeing something amazing and out of this world. It can also be used to describe how you feel after realizing something crazy, like an epiphany on steroids.
Josh was brain banged when he realized that there was an arrow in the Fed Ex Logo and that OK is a stick figure side ways.

How did he pull that bunny out of that hat!? Man, what a Brain Bang.

Whoa! Inception gave me a crazy brain bang the whole time I was watching.

Cubone is a baby Kangaskhan!? BRAIN BANG.
by IaMmE Fan May 5, 2011
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The safe for work version of "mind fuck."
Dude, that new rubiks cube is nothing more than a serious brain bang.
by c60jam May 11, 2011
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(1) The male gender's version of scissoring. An instance where two men touch both balls and taint.
:Knock:
Kevin: Hello?
Carl: I'm here for the brain bang.
by EJSD June 25, 2011
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